Update Python versions.

Author: lgautier

pyproject.toml

@@ -19,6 +19,8 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "License :: OSI Approved :: MIT License",
     "Intended Audience :: Developers",
     "Intended Audience :: Science/Research",